package demo;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Echo {

	public static void main(String[] args) throws IOException {
		BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));

		String s;
		while ((s = stdin.readLine()) != null && s.length() != 0) {
			System.out.println(s);
		}
		// An empty line or Ctrl+z terminates the program
	}

}
